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发明名称
Forstærkerkobling til lydoverføring ad elektrisk vej.
摘要
申请公布号
DK71514(C)
申请公布日期
1950.09.25
申请号
DK19460003300
申请日期
1946.08.28
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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